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Baseboard Smart Heat
Avoid the 24V thermostat mismatch with a compatibility-first guide to line-voltage electric baseboard, load ratings, and smart controls.
PRO1 IAQ T855iSH 8" Backlit WiFi Thermostat: Large 8" Backlit Display
This WiFi thermostat gives you precise control over your home's comfort, perfect for homeowners who want to manage energy use without sacrificing convenience. The large 8-inch backlit display and glow-in-the-dark button make it easy to read and adjust, even in a dark hallway at night.
Instead of just programming a schedule, use the auto changeover to let the thermostat switch between heating and cooling as needed. You can set temperature limits and enable keypad lockout to prevent tampering, which is great for rental properties or homes with curious kids. The filter alert reminds you to replace the filter, helping your HVAC system run efficiently.
Compatible with 2H/2C conventional and 5H/3C heat pump systems, this thermostat handles most residential setups. Installation is straightforward with color-coded terminals and a universal sub-base, so you can replace your old thermostat in under an hour.
Manage your thermostat remotely via the app, and pair it with Amazon Alexa or Google Assistant for voice control. You can adjust the temperature from bed, check the forecast, or set a schedule without leaving the couch.
Features
- WiFi-Enabled with Programmable Options
- Advanced HVAC Compatibility
- Precision Control & Security Features
- Reliable & Easy Installation
- Large 8" Backlit Display
General specs
- Brand: PRO1 IAQ
- Model: T855iSH
- Seller: Amazon
- ID: B0DYL7VR8Z
- WiFi: Yes
- Mounting: Junction Box
- Backlight: Blue
- Control Fan: Yes
- Button Glow: Yes
- Keypad Lock: Yes
- Display Size: 8 inches
- Power Supply: 24V
- Programmable: 7-Day, Non-Programmable
- Alerts Filter: Yes
- Auto Changeover: Yes
- Limits Setpoint: Yes
- Compatibility Hvac: 2H/2C Conventional, 5H/3C Heat Pump
- Base Sub Universal: Yes
- Coded Color Terminals: Yes
- Calibration Room Temp: Yes
- First listed by seller: 5/28/26
If you are interested in more details, you can find full information on the seller's page.
Amazon live offers
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Top live offer is the offer currently shown first for this Amazon listing. It may differ from the lowest available price.
FBA means the order is fulfilled by Amazon, even when the seller is a third-party merchant.
Shippable means the offer is listed as available for delivery on Amazon.
New, Used and Refurbished describe the item condition shown for that Amazon offer.
Top live offer
$165.66
Free shipping
New
Third-party seller
FBA
Shippable
New from
$162.81
Only from New + Shippable live offers
New offers
Third-party seller
· FBA · Shippable
$165.66
Third-party seller
· FBA · Shippable
$162.81
Third-party seller
· Shippable
$196.19
Offers updated: 6/3/26
Price History for seller Amazon
| Date | Price |
|---|---|
| 5/29/26 | $162.81 |
| 5/28/26 | $162.81 |
Shipping options
Delivery to 
Russia
Russia
Available
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| Price | $165.66 | $229.00 | $140.69 | $172.99 | $52.99 | $66.99 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | May 29, 2026 | May 29, 2026 | May 29, 2026 | May 29, 2026 | May 29, 2026 | May 29, 2026 |
PRO1 IAQ T855iSH Large 8" Backlit Display
$165.66
When this device makes sense
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